(19)

(11)

EP 2 585 933 A1

(12)

(43) Date of publication: 01.05.2013 Bulletin 2013/18 (21) Application number: 11726399.6 (22) Date of filing: 14.06.2011

(51) International Patent Classification (IPC):  G06F 13/40(2006.01) (86) International application number: PCT/EP2011/059810 (87) International publication number: WO 2011/160981 (29.12.2011 Gazette 2011/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 23.06.2010 US 821245 (71) Applicant: International Business Machines Corporation Armonk, NY 10504 (US)	(72) Inventors: GREGG, Thomas Poughkeepsie, New York 12601-5400 (US) CRADDOCK, David Poughkeepsie, New York 12601-5400 (US) LAIS, Eric, Norman Poughkeepsie, New York 12601-5400 (US) (74) Representative: Stretton, Peter John  IBM United Kingdom Limited Intellectual Property Law Hursley Park Winchester, Hampshire SO21 2JN Winchester, Hampshire SO21 2JN (GB)